One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,4)(3,7,9,10)(5,12,13,8)(11,16,15,14)(17,18)(19,22)(20,27)(21,24)(23,28)(25,29)(26,32)(30,31)(33,34,40,38)(35,41,37,46)(36,43,39,42)(44,48,45,47)(2,4)(3,9)(8,12)(11,15)(19,25)(22,29)(26,31)(30,32)(33,35)(34,41)(36,45)(37,40)(38,46)(39,44)(42,48)(43,47) involution — undirected(2,4)(3,9)(8,12)(11,15)(17,18,21,24)(19,22,25,29)(20,23,28,27)(26,30,31,32)(33,36,40,39)(34,42,38,43)(35,44,37,45)(41,47,46,48)(1,3)(2,7)(4,10)(5,11)(6,9)(8,14)(12,16)(13,15)(17,18)(19,22)(20,23)(21,24)(25,29)(26,30)(27,28)(31,32)(33,37,40,35)(34,41,38,46)(36,44,39,45)(42,48,43,47)(1,4,6,2)(3,10,9,7)(5,8,13,12)(11,14,15,16)(17,19,21,25)(18,22,24,29)(20,26,28,31)(23,30,27,32)(33,38,40,34)(35,41,37,46)(36,42,39,43)(44,48,45,47)(1,5,6,13)(2,8,4,12)(3,11,9,15)(7,14,10,16)(17,20,21,28)(18,23,24,27)(19,26,25,31)(22,30,29,32)(33,39,40,36)(34,43,38,42)(35,44,37,45)(41,47,46,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.